When we were learning how to prepare IM medications, we were taught to use a blunt needle to draw up our medications then change the needle prior to administration.
For example: You have to draw up 3 cc of medication from a vial.
You would attach a blunt needle to a syringe. Inject your 3 cc of air, then withdraw your 3 cc of medication. Once you've done this, pull back on the plunger enough to take all the medication out of the blunt needle.
Here you would use your scoop method to recap your needle. Once done, twist it off and apply your 22 or 23 gauge needle you'll use for injection. Leave the cap on.
Once you go into the patient's room and do all of your checks, you will swab your injection site then uncap your needle to give the injection. Otherwise your needle should be capped from preparation untill injection.
Hope this helps you out !